violence inamerica.hadiyapendleton, 15years old, a majorette in her high school band, gunned down in chicago, days after taking part in the inauguration festivities. well today, a new image of the young woman emerged. and a mayor says she's taking he's taking action. abc's alex perez with that. >> reporter: it's been more than a decade since chicago has had a january this bloody. 42 murders so far this month, including 15-year-old hadiya pendleton, that standout student who performed at the president's inauguration festivities. today, we learned she made this anti-gang video when she was just in sixth grade. >> your job to say no to gangs and yes to a great future. >> reporter: but hadiya's own future, cut short, when she was caught in gang cross fire tuesday. this city's mayor, rahm emanuel, announcing today 200 chicago police officers from the city's stretched thin force will move from behind the desk to the streets to target high crime areas. >> we need to work together to protect our greatest resource. the children of the city of chicago. >> reporter: pendleton was with her fr